Razor type hair trimmer



May 20, 1952 w. M. MANsFlELD 2,597,653

' RAZOR TYPEHAIR TRIMMER Original Filed Jan. 5, 1949 mm f5 JW. 5 I

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Patented May 20, 1952 UNITED STATES NTA` olFaFfic-E -RAzoR TYPE HRTRIMMER Warren M. Mansfield, Glendale, Calif., assigner to CutterCorporation, Dover, Del.,a corporation of Delaware substituted for'abandoned application Serial No.

68,907, January 3, l194.9. V-This'application January 25, 1951. SerialNo. 207,768

(Cl. y30--31) 5 claims. l

vjustable to different positions for thinning,

trimming or shaving.

An object of the present invention is to improve and simplify theconstruction in the above mentioned patent application in a number Yofrespects as follows: Improve and simplify the construction wherebythehandle and guard is constructed of identical halves, two of which may befitted together to form the handle and guard member; provide a windtunnel or conduit along each cutting edge of the blade with an inlet foreach wind tunnel through spaces in each guard to provide for ejectingthe out hair by blowing onto the guard; provide an improved guardA forthinning purposes whereby each cutting edge of the blade is suitable forthinning when..

the blade is in its innermost position and wherein the full length ofboth cutting edges are unguarded on intial movement of the blade fromits innermost position whereby either side of the trimmer may be usedwhen held in either hand, without the necessity for orienting thetrimmer as in the former construction where a thinning guard wasprovided on one side only of the trimmer.

The trimmer disclosed herein may have various 'external shapes ordesigns, the particular one here illustrated being described and claimedin Patent D. 157,063, issued January 31, 1950 for `design for Razor TypeHair Trimmer.

For further details of the invention, reference may be made to thedrawings 'wherein Fig. 1 is a side view in elevation, full scale, of arazor type hair trimmer according to the present invention.

Fig. 2 is an enlarged top plan View ofthe trimmer of Fig. l with partsbroken away.

Fig. 3 is a sectional view on substantially line 3-3 of Fig. 2 lookingin the direction of the arrows.

Figs. 4, 5 and 6 are sectional views on lines of the correspondingnumbers in Fig. 3, the views beingtaken in the direction of the arrowsas indicated.

To Fig. `5 has been ladded a showing in dotted '2 lines of the trimmerin position for use asa razor. v K h y n Fig. 7 is a sectional viewcorrespondmg'to Fig.

-,5,.withthe blade holder in elevated positionto further illustrate theYwind tunnels.

Referring in detail to the drawings, the razor type hair trimmer lcomprises duplicate handle parts 3 and 4 which may be molded of plasticmaterial from the same die. The parts 3 and 4 iit together as laterdescribed, to provide a handle 5`having parallel guards -6 and 1.

A flexible double edge razor blade indicated at 8 is removably clampedin curvedvposition between an upper blade holder member 9 and a lowerblade holdermember lil. The blade Vholder members Y9 and l@ arepivotally connected at one end as indicated at H and removably held inclamped position by anintegral hook I2 on the member 9 and a catch lug'i3 on the member IU. The inner blade holder member l0 has spaced lugslli and I5 on its outer surface to receive and position the slot I6 inthe blade 8.

The inner blade holder member ID has inwardly projecting 'therefrom apair of pins l1 and I8 which slide in apertures I9 and 20, respectively,one longitudinal half of each 'such aperture `being molded in thehandle'halves'S and ll where- Vby the handle halves 3 and `4 when'fitted together as shown provide a substantially cylindricalfslidebearing for the pins Il and i8. The pins l'l and I8 prevent the bladeholder 9, l0

`from rotating when advanced or retracted by the .screw 2| which engagesthreads in a `nut 22 which is molded integral with the blade holdermember Ill. The exterior surface of the nut 22 may be cylindrical andeach ofthe handle kpieces 3 and 4 provides one-half of a cylindricalslide 'bearing Vfor the nut 22, the half of this bearing in the handlepart 3 being indicated at 23. Adjoining the inner end of the bearinghalf 23 is an enlarged bearing 'half 24 for a stub shaft 25molded-integral with the-screw'Zl. Each of the handle portions'3 and -4lhas an internal Web as indicated at 26, providing a-shoulder 21 for theouter end of the stub shaft 25. Integral with the stub shaft 25 and'inwardly thereof is a knurled knob 28, the opposite sides -of whichprotrude through windows 29 and 30, see Fig. 6, in the upper part of thehandle portions 3, 4. At the lower portion of the windows 29 and 30, thehandle parts 3 and 4 have cross webs 43| and 32 which provide a walltolimit the inward movement of the knob 28 when the blade holder 9, I0is being elevated, there being a small amount of play in the spacebetween the wall 3|, 32 and the shoulder 21.

The screw 2| is arranged along the axis of the handle and the knob 28 ishoused in the handle 5 which is hollow.

So that the handle parts 3 and 4 will mate and may be tted together, forexample the handle part 3 is provided with an integral pin 40, see Fig.3, and opposite thereto with an integral aperture 4| whereby the pinlike 48 on the other casing half 4 will fit in the aperture 4| and thepin on the casing part 3 will t the aperture like 4| on the casing part4 when the halves 3 and 4 are tted together. Also a plurality of otherpins and apertures are provided on the parts 3 and 4 and preferably instaggered relation; for example, the part indicated at 3 and, in fact,its companion part when viewed in the same way may have an upperright-hand pin as indicated at 40, an intermediate left-hand pin 42 anda lower right-hand pin not shown, an upper left-hand pin aperture 4|, anintermediate right-hand pin aperture 43 and a lower left-hand pinaperture not shown. In the example shown and described, the handlehalves 3 and 4 are held together by six pins, half of which are on oneof the handle halves and half on the other, all pins having a mating pinaperture in the other handle half.

As shown in Fig. 6, the knob 28 at its opposite sides may be flattenedas indicated at 44 and 45 to make known the extent of rotation of theknob 28 by touch. The direction in which the knob 28 should be turned toeffect up or down movement may be indicated by indicia as indicated at46 on the side of handle 5.

The handle portion 3 at its upper end has an outwardly and upwardlyextending ange 41 which terminates at its upper end in-the guard 1 andthe duplicate half 4 has a similar flange 48 which terminates at itsouter end in the guard 6.

The guard 6 has a plurality of spaced guard members like 90, 9|, 92, andguard 1 has a corresponding plurality of similar spaced guard memberslike 50, 5|, 52, see Fig. 2, which have outer tips like 53, see Fig. 4,and transverse tips like 54, having outer faces like 55. The face of theguard members of each guard is in a plane and those planes preferablyare tilted at something less than 45 deg. to the axis of the handle 5,so that the cutting edges of the blade will intersect the plane of thefaces like 55, particularly when the blade is elevated to the razorportion shown in dotted lines at 56 in Fig. 5.

The guard 6 has inner faces like 51 which lie in one plane and the guard1 has inner faces 58 which lie in a parallel plane, the blade 8 beingmovable with its cutting edge 59 parallel to, and closely adjacent thefaces 51 and with its cutting edge 60 closely adjacent and parallel tofaces 58.

Alternate spaces between the guard members 58, 5|, 90, 9|, etc. of eachguard, 6, 1, are provided with ledges or stop and guard lugs like 10,1|, 12, see Fig. 2, to guard the cutting edges 59, 60 of the blade atspaced intervals so that no hair will be cut at those intervals when theblade is in its innermost position, but the hair will be cut at theremaining alternate intervals between the guard members. In the exampleshown, the stop guards are illustrated in Figs. 1 and 2 as beingprovided at 10, 1|, 12 on the guard 6 and, of course, directly oppositethereto on the guard 1; as shown in Fig. 2, the one opposite to 1| isindicated at 6|. Each of the stop guards like 6|, 18-12 terminates atits outer end behind the innermost position of the cutting edges of theblade as indicated for the ends 84. of stop guards 6|, 1| in Fig. 4,whereby the blade on initial movement from the stop guards like 6|, 10to 12 is exposed on both edges for cutting purposes throughout its fulllength. In other words, the spaces between certain of the members of theguard are of greater depth than the spaces between other guard members,the spaces of lesser depth, such as the space between members 5|, 52 inFig. 2 have a bottom portion 6| to block the cutting action of the bladewhen in juxtaposition with the blade.

The above statement that the outer ends like 84, 85 of the stop guardsterminate behind the cutting edge of the blade when the latter is in itsinnermost position, means that the cutting edge of the blade is then injuxtaposition with such outer ends 84, 85, and also as will be apparentfrom Figs. l, 2, and 4, the spaces between the stop guard members atopposite sides of a given stop guard, open into the top of that stopguard. For example, the space 93 between the guard members 5| and 52opens into the top 84 of the stop guard 6|, whereby the cutting edge 60of the blade in the space between the guard members 5| and 52 is inposition to cut the hair for the initial and all subsequent movement ofthe cutting edge 60 from the end 84 of the stop guard 6|.

Also each of the stop guards like 6|, 18 to 12 extends transverselyslightly beyond the cutting edge of the blade as indicated at 13, 14 soas to guard the cutting edges 59, 60 at spaced intervals when the bladeis in its innermost position. At that time, the remaining intervalsbetween the guard members like 50 to 52, 90 to 92, etc. are in conditionto cut the hair reaching such intervals because, as shown in Fig. 5, theflanges 41 and 48 are cut away opposite and behind the cutting edges 59,60 as indicated at 15 and 16 to expose the cutting edges of the blade atspaced intervals. Also the recesses like 15 and 16 open into conduits orwind tunnels 11, 18 which extend parallel to and open into the rear sideof the cutting edges of the blade. These wind tunnels 11 and 18 may beemployed to blow out hair which has been cut, by directing a draft ofair toward either one of the guards 6 and 1. The wind tunnels orconduits 11, 18 exist; when the blade is in its innermost position asshown in Fig. 5, but the size of such tunnels is, of course, increasedwhen the blade is in elevated position, as shown in Fig. 7. Theeffectiveness of the conduit 11, 18 is increased by reason of the factthat the inner surface 19 of the flange 48 is concave to form a part ofthe conduit 11 and the inner blade holder |0 is reduced in width, asshown at 80, and is concave as shown at 8| to form another portion ofthe conduit 11. The outer ends of the conduits 11 and 18 are widened bycutting away the opposite ends of the flanges 41, 48 as indicated atdotted lines 82, 83, see Figs. 2 and 3.

This application is a substitute for application Serial No. 68,907 filedJanuary 3, 1949 for Razor Type Hair Trimmer and now abandoned.

Various modiiications may be made in the invention without departingfrom the spirit of the following claims.

I claim:

l. A hair trimming type razor comprising a. blade holder having opposedinner and outer members for clamping the blade therebetween, a

handle having a guard comprising spaced members having inner facesrespectively lying in a plane, said handle having means supporting saidblade holder for transverse movement of the cutting edge of the blade ina path parallel to itself behind said members and adjacent and parallelto said faces, a ledge extending lacross said path, said ledge having anouter end extending across the space between adjacent guard members inposition to abut and guard the cutting edge of the blade byjuxtaposition therewith, the space between said adjacent guard membersopening into the outer end of said ledge whereby the cutting edge of theblade is guarded when in juxtaposition with said ledge and unguardedwhen off of said ledge, and means for moving said blade holder to movethe blade along said inner faces between said guarded and unguardedpositions.

2. A hair trimming type razor comprising a blade holder having opposedinner and outer members for clamping the blade therebetween, a handlehaving a guard comprising spaced members having inner faces respectivelylying in a plane, said handle having means supporting said blade holderfor movement of the cutting edge of the blade in a path parallel toitself behind said members and adjacent and parallel to said faces, andan interrupted stop guard extending between certain adjacent ones ofsaid guard members, said stop guard extending across the blade path inan interrupted line to receive, support and guard the cutting edge ofthe blade at certain spaced intervals when in its innermost position,said guard having recesses between others of said guard members toexpose the cutting edge of the blade at other spaced intervals when thebladeis in its innermost position.

3. A hair trimming type razor comprising a razor blade holder for adouble edge razor blade, a guard for each of the two cutting edges ofthe blade, each of said guards comprising a plurality of spaced members,each having a straight face extending lengthwise of the blade path, saidfaces of one of said guard members respectively lying in a plane, saidfaces of the other of said guard members lying in a plane parallel tosaid first plane, said planes being spaced apart slightly more than thedistance between said cutting edges, means supporting said blade holderfor movement of the cutting edges of the blade lengthwise of said faces,and a linear array of stop guards extending inwardly of and across thespace between the faces of certain adjacent members in each of saidguards, said arrays of stop guards being in position to guard thecutting edges of the blade at one position of said blade holder.

4. A hair trimming type razor comprising a blade holderl having opposedinner and outer members for clamping the blade therebetween, a handlehaving a guard comprising spaced members having inner faces respectivelylying in a plane, certain of the spaces between the members of saidguard having a greater depth than the remaining spaces, the spaces oflesser depth each having a bottom portion adapted to block the cuttingaction of the blade when in juxtaposition with the blade; said handlehaving means supporting said blade holder for transverse movement of thecutting edge of the blade in a path parallel to itself behind saidmembers and adjacent and parallel to said faces, and means for operatingsaid blade holder to move the cutting edge of the blade into or out ofjuxtaposition with the bottom portion of said spaces of lesser depth.

5. A hair trimming type razor comprising a handle having a guardcomprising spaced members having inner faces respectively lying in aplane, a holder having opposed inner and outer -members for clamping theblade therebetween at an angle to said plane, certain of the spacesbetween the members of said guard having a greater depth than theremaining spaces, the spaces of lesser depth each having a bottomportion adapted to block the cutting action of the blade when injuxtaposition with the blade, said guard members having outer faceslying in a plane inclined to the plane of the cutting edge portion ofthe blade, the plane of said outer faces intersecting the plane of thecutting edge portion of the blade when the cutting edge is adjacent theouter ends of said guard members, said handle having means supportingsaid blade holder for transverse movement of the cutting edge of theblade in a path parallel to itself behind said guard members andadjacent and parallel to said inner faces, and means for operating saidblade holder to move the cutting edge of the blade to an inner positionin juxtaposition with the bottom portion of said spaces of lesser depth,to an intermediate position out of juxtaposition with said bottomportions, and to an outer position adjacent the outer ends of said guardmembers.

WARREN M. MANS-FIELD.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS

